The C90/Astromaster AZ combo

Folks, I'm considering getting this for each of my grandsons as their first scope (8 and 10, different families). What experience have any of you had with this combination? I've read different accounts on forums and Amazon reviews, wanted to hear from this group.

I'm sorry. The OP sounded like the C90 was being sold with the AZ Astromaster AZ as a combo. Personally, I never think in terms of a Cat or refractor necessarily remaining with the mount with which it was sold, though I know some people think in those terms.